Well its really time to replace this furnace, but thats not in line for a few months at least, major car repairs ate into the extra cash. Anyways, here's the issues and specs. Unsure of the year, its at least 20 years old, Sears furnace(no-ac) model 867764732. The unit will fire up just fine, pilot stays lit and burners come on. Once the blower starts up it will emit an obnoxious hum and if it decides to actually turn the blower wheel it wheel then whine at clank as though its rubbing on the walls of the enclosure. My first thoughts are that its the blower motor gone south. I can get the blower motor relatively cheap, as a stop gap to get me by until a later date. My question is does this sound right or am I missing something else? Sorry for the less then stellar descriptions of the sounds it's making.
